feat: first try at implementing macros for dogs

Author: helightdev

packages/dogs/analysis_options.yaml

@@ -22,6 +22,10 @@ linter:
     - avoid_print
     - prefer_final_locals
 
+analyzer:
+  enable-experiment:
+    - macros
+
 # Uncomment the following section to specify additional rules.
 
 # linter:

packages/dogs/lib/dogs_core.dart

@@ -37,6 +37,7 @@ export "src/global.dart";
 export "src/graph_value.dart";
 export "src/hooks.dart";
 export "src/json.dart";
+export 'src/macro.dart';
 export "src/metadata.dart";
 export "src/opmodes/factory.dart";
 export "src/opmodes/operation.dart";